Classifications

• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D405/00—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
  • C07D405/02—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings
  • C07D405/04—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings directly linked by a ring-member-to-ring-member bond
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D277/00—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings
  • C07D277/02—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings
  • C07D277/20—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
  • C07D277/22—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms
  • C07D277/30—Radicals substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D277/00—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings
  • C07D277/02—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings
  • C07D277/20—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
  • C07D277/32—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
  • C07D277/56—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D417/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00
  • C07D417/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings
  • C07D417/04—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings directly linked by a ring-member-to-ring-member bond

Definitions

• the present invention concerns processes for the production of new p-substituted benzene sulphonamides as well as the compounds obtained according to these processes which have valuable pharmacological properties.
• R represents hydrogen or an alkyl, alkoxyalkyl, carboxy, carbalkoxy, carbamyl, cycloalkyl, aralkyl, aryl, hydroaryl, furyl, thienyl or thienylalkyl radical and wherein any aromati ring in R can be substituted by halogen, alkyl, alkoxy, alkylendioXy, amino, acylamino, carboxy, carbalkoxy, carbamyl, sulphamyl or sulphonic acid groups
• R by itself represents hydrogen, an alkyl, alkenyl, aralkyl or dialkylaminoalkyl radical, an alkyleniminoalkyl radical having 56 ring members or a morpholino alkyl radical
• X by itself represents oxygen, NH or NR or X-R together represents an alkylenirnino radical having 56 ring members or the morpholino radical, and n represents 0 or 1, inhibit carbonic an
• Such compounds can be produced in a simple manner by condensing p-thiocarbamyl benzene sulphonamide (psulphamylthiobenzamide), of the general Formula II with compounds, in particular halogen oXocarboXylic acid esters, of the general Formula III, according to the rewherein R and R have the meanings given for the radicals R and -COX-R respectively but in addition also represent further radicals which can be converted into carboxy groups by hydrolysis and/or oxidation or, in the case of R can also contain such radicals, Hal represents chlorine or bromine, and n represents 0 or 1.
• the p-substituted benzene sulphonamides as defined can be produced by reacting p-substituted benzene sulphonic acid derivatives, in particular benzene sulphochlorides of the general formula:
• R represents chlorine, bromine or an aryloxy group and R, and R have the meanings given for the radicals R and CO-XR respectively but in addition R" can represent a halogenocarbonyl group or a radical R which contains a halogenocarbonyl or a halogenosulphonyl group instead of carbamyl groups or a sulphamyl group, and R; can represent a halogenocarbonyl group, and n has the meaning given above, with the amount of ammonia corresponding to the number of acid halide groups present, the reaction being performed in the presence of an acid binding agent, advantageously in excess ammonia.
• the sulphohalides necessary as starting materials for this process are new in themselves and can be produced by processes known per so which will be more closely described below.
• benzene sulphonamides of the general Formula I can be converted into p-substituted benzene sulphonamides of the general Formula I by treatment with oxidising agents such as e. g. potassium permanganate.
• oxidising agents such as e. g. potassium permanganate.
• the condensation according to the first production process can be performed with good yields, e. g. by heating the reaction components in aqueous alcohol without any condensing agents or catalysts.
• the ethyl and methyl esters of a-acyl-ahalogen acetic acids are used as halogen oxocarboxylic acid derivatives.
• n 1
• n 1
• ,B-acyl-fi-halogen propionic acid alkyl esters such as the methyl and ethyl esters of ,B-chloroand fl-bromolevulinic acid and Bbenzoyl-5-bromo-propionic acid.
• halogen oxocarboxylic acid derivatives derivatives of halogen malonic dialdehydes are used for eX- ample such as the a-bromopfl-diethoxy propionaldehyde,
• cyclopropancarbonyl, cyclohexane car-i p-acetylamino-benthen on condensing with p-sulphamyl thiobenzamide, 2- (p-sulphamyl-phenyl)-thiazole--aldehyde is obtained, i. e.' a compound having a radical R which can be converted by oxidation into the carboxy group.
• the oxidation is performed by the methods known for the conversion of an aldehyde into a carboxylic acid such as e. g. oxidation with oxygen or air in the presence of heavy metal catalysts.
• the oxidation can also be performed with hydrogen peroxide, potassium permanganate in alkaline solution, diluted nitric acid, chlorine or bromine water.
• p-Substituted benzene sulphochlorides of the general Formula V can be reacted direct or after solution in inert solvents with excess ammonia, if necessary on heating.
• the starting materials necessary for this process can be obtained e. g. by oxidising chlorination of p-[S-carboxythiazolyl-(2)]-phenyl benzyl sulphides, which may be substituted in the 4-position, or of bis-[p-5-carboxy-thiazolyl- (2)-phenyl]-disulphides as well as of the esters thereof.
• p-Substituted benzene sulphochlorides of the general Formula V can also be produced by reducing a p-[S-carboxy-thiazolyl-(2)]-nitrobenzene which may be substitued in the 4-position, to the amino compound, converting this into the corresponding diazonium chloride and treating the latter with sulphur dioxide in a non-water containing solution. On reacting sulphur dioxide in a solution containing water; first a sulphinic acid is obtained which can be converted by methods known per se into the corresponding sulphochloride.
• the benzene derivatives used in the above process which have a substituted thiazolyl radical in the p-position to a radical which is capable of being converted, such as the benzyl sulphides, disulphides or 4-substituted p-[S-carboxy-thiazolyl-(Z)lnitrobenzenes and the esters thereof are obtained in a manner analogous to the first production process named by using p-benzylmercapto-thiobcnzamide, p.p'-dithio-bis-thiobenzamide or p-nitrothiobenzamide for the condensation with halogen oxocarboxylic acid esters of the general Formula III instead of p-sulphamyl thiobenzamide, and, possibly hydrolysing the p-[5-carbalkoxy-thiazolyl-(2 ⁇ l-bcnzene derivatives obtained.
• the p-substituted benzene sulphenamides of the general Formula VI which are starting materials for the third general production process are obtained for example from the p-[5-carboxy-thiazolyl-(2)l-phenyl benzyl sulphides mentioned in the previous paragraph, from bis-p-[S-carboxy-thiazolyl-(2)-phenyl]-disulphides, from Z-(p-mercapto-phenyD-thiazole-S-carboxylic acids obtained therefrom by reduction as Well as from the esters corresponding to all these acids, by reacting with alkali hypochlorites in the presence of ammonia.
• EXAMPLE 1 21.6 parts of p-sulphamyl thiobenzamide are dissolved in 200 parts by volume of 50% alcohol and 15.0 parts of u-chloracetoacetic acid methyl ester are added at 50. After boiling for 15 hours, the reaction mixture is cooled and filtered. The 2-(p-sulphamyl-phenyl)-4-methyl thiazole-S-carboxylic acid methyl ester obtained (MP. 216) is saponified by boiling with diluted caustic soda lye. On acidification of the solution, 2-(p-sulphamyl--phenyl)- 4-methy1 thiazole-S-carboxylic acid is obtained in the form of fine crystal needles. (M. 1?. 248 from methanol, with decomposition.)
• EXAMPLE 2 45.5 parts of formyl chloroacetic acid ethyl ester are refluxed for 3 hours with 150 parts by volume of alcohol, 50 parts of water and 79 parts of p-sulphamyl thiobenzamide. After cooling, the crystals are drawn off under suction and recrystallised from alcohol. 2-(p- 4 sulphamyl-phenyD-thiazole-5-carboxylic acid ethyl ester melts at 213-215". A further amount is obtained by concentrating the mother liquors.
• EXAMFLE 4 8 parts of phenylacetyl-chloroacetic acid ethyl ester. are refluxed for 6 hours with 30 parts by volume of alcohol, 20 parts of Water and 7 parts of p-sulphamyl thiobenzamide.
• the reaction product is worked up as described in Example 1.
• the melting point of the pure 2-(psulphamyl-phenyl)-4-benzyl thiazole ,5 carboxylic acid ethyl ester is 209-2l1. It is saponifiedas-described in Example 1.
• 2-(p-sulphamyl-phenyl)-4-benzyl thiazole-5- carboxylic acid decomposes at about 23-8-239.
• EXAMPLE 5 33 parts of chloro-oxalacetic acid diethyl ester are refluxed for 6 hours with 33 parts of p-sulphamyl thiobenzoamide and 200 parts by volume of alcohol. The product is worked up as described in Example 1. The pure 2-(psulphamyl-phenyl)-thiazole-4.S-dicarboxylic acid diethyl ester melts at l37-139.
• EXAMPLE 7 33 parts of [3-bromo-levulinic acid ethyl esterare re-. fiuxed for 4 hours with parts by volume of alcohol and 32 parts of p-sulphamyl thiobenzamide. The product is worked up as described in Example 1. The pure 2-(psulphamyl-phenyl)-4-methyl-thiazole-5-acetic acid ethyl ester melts at 149-151".
• EXAMPLE 9 The wax-like crude carboxylic acid chloride mentioned in Example 8 is heated for 1 hour in a water bath with 100 parts of lmorpholine. The solution obtained is poured EXAMPLE 11 The residue described in Example 10 is dissolved in hot chloroform and poured into parts of morpholine. The mixture is then evaporated to dryness in the vacuum and the. residue is. recrystallised from diluted alcohol.
• esters given in Table II are obtained from the above acid chloride or the 2-(psnlphamyl phenyl) 4 methyl thiazole 5 carboxylic acid chloride produced according to Example 8 and from the 'corresp onding alcohols into water whereupon 2(p-sulphamyl-phenyl)-4-methylthiazole-S-carboxylic acid morph'olide separates out. After recrystallising from alcohol it melts at 223226.
• EXAMPLE 10 34.0 parts of 2-(p-sulphamyl-phenyl)-4-isobutyl-thiazole-S-carboxylic acid are refluxed for half an hour with 175 parts of thionyl chloride and 0.5 part of pyridine and then evaporated to dryness in the vacuum. The waxlike residue is rubbed with 200 parts of a 25% aqueous ammonia until it becomes pulverulent when it is filtered off. The 2-(p-sulphamyl-phenyl)-4-isobutyl-thiazole-5- carboxylic acid amide so obtained is recrystallised from N-bl'lt'alnol and melts at 199-201 Daily doses of -500 mg.
• R represents a member selected from the group consisting of hydrogen, lower alkyl, methoxymethyl, -COOH, cyclohexyl, fl-phenylethyl, benzyl, 'y-phenylpropyl, dimethylbenzyl, phenyl, chlorophenyl, methylphenyl, methoxyphenyl, methylendioxyphenyl, carboxyphenyl and carbethoxyphenyl; R by itself represents a member selected from the group consisting of hydrogen, lower alkyl, benzyl and diethylaminoethyl; X by itself represents a member selected from the group consisting of oxygen and NH; XR together represent the diethylamino group and the morpholino group; and n represents one of the numerals 0 and 1.

Landscapes

• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Thiazole And Isothizaole Compounds (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=4541887

Family Applications (1)

Country Status (4)

Cited By (4)

Families Citing this family (1)

• 0
  • BE BE556801D patent/BE556801A/xx unknown
• 1957
  • 1957-04-08 US US651143A patent/US2858318A/en not_active Expired - Lifetime
  • 1957-04-16 GB GB12352/57A patent/GB846573A/en not_active Expired
  • 1957-04-18 FR FR1174297D patent/FR1174297A/fr not_active Expired

Non-Patent Citations (1)

Also Published As

Similar Documents